Enhance Database Reset Commands

[galen8183]

This PR adds a number of small changes and features to the dbreset scripts.

Overview of all changes:

• Renamed some variables to be less ambiguous
• Added timestamp(s) to status messages, including random code expiration and time until reset completion
• Reduced DB interactions where possible
• Prevent extra execCC before sending completion message
• Change embed formatting and wording for more clarity (you can of course easily change this to whatever you think is reasonable)
• Reduced redundancy, therefore less characters
• Reformatted some code for better readability
• Use truthiness instead of comparison operators in some conditional statements
• Improve random code generation method (using randInt and printf instead of shuffle)

In my testing, this seems to not have any of the known bugs, those being issue #36 and the very recent reports of invalid key errors.

[galen8183]

I've made a few more changes here, mainly prompted by 9890313.

These changes make the deletetion significantly more efficient, avoiding the extra costly dbCount call each CC execution, and instead uses the existing $count variable.
It also now only deleted entries when there are entries to delete, using a comparison instead of truthiness within range (I figured adding an else branch with break isn't necessary, since it's only going to iterate at most 10 times).

Additionally, I've changed the sdict key casing within the database entry and execdata to be more readable and follow convention.

Unrelated to this PR, you may consider changing the CC to dbresetpattern, since this is what it actually does (dbCount also reflects this, which was previously misdocumented as counting by the key exactly)

[BlackWolfWoof]

I saw this but my fluffbutt hasn't come to this yet. Sorry :/